followed by president obama, vice president biden, and former congresswoman gabrielle giffords. -- paying tribute to her congressional aide, gabe zimmerman. later, al sharpton's action network annual convention. >> probably the most tragic of all our first ladies. she hated the office. hated it with a passion. ,> they took to the white house they had eight rooms they had to furnish. >> but she spent much of her time writing letters. to her dead son. in her